Answer Posted / roshini

Grep is a line-based search utility and is used primarily to return lines from a file, or files, that match a particular search term. Sed is similar, as in it is a line-by-line style utility, but is meant more for string replacement within lines of text.

Why is it called grep?

1027

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How do I delete files from command prompt?

1222

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What is {} in find command?

1108

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What is the general format of unix command syntax?

1939

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How do I find previous commands in unix?

1187

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Explain ‘system calls’ with respect to unix commands?

1094

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What is the comma to show the space allocation of files?

1086

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Name the unix command to find how many days the server has been up.

1163

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Which command is used to delete all files in the current directory and all its sub-directories?

1255

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What is awk command used for?

1232

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What does this command do? Cat food 1 > kitty

1585

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When i run a programm of orphan process. Instead of getting child's parent (ppid)=1 ..i get 1400 and it varies as per system. How can i findthe right soluion??? My pgm: #include # include int main() { int pid; pid=fork(); if(pid < 0) {exit(-1);} else if(pid==0) { printf("Child Process is Sleeping ..."); sleep(10); printf("Orphan Child's Parent ID : %u ",getppid()); } else { printf("Parent Process Completed ... %u ",getpid()); exit(0); } return 0; } Output:

2265

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Name the general commands in using unix os for a beginner?

1161

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what is the advaantage of each user having its own copy of the shell?

2554

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Is ‘du’ a command? If so, what is its use?

1148

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